| http://www.w3.org/ns/prov#value | - In a fourth aspect, the invention is a system of injecting de-iceant into a flowing stream of compressed air comprising: a) a turbine within the flowing air stream; b) a source of liquid de-iceant; c) a de-iceant supply device in fluid communication with the source of de-iceant for injecting de-iceant into the stream of compressed air; and d) a controller which controls the rate of de-iceant injec
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